B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
B08B 3/02 (2006.01) D21G 3/02 (2006.01)
Patent
CA 2102262
[57] Abstract A method and apparatus is described herein for cleaning the surface of a backing roll in a coater or a calender roll. The roll (1) is cleaned by injecting steam from a steam injection chamber (14) against the roll surface at a 15° angle counter to the rotational direction of the roll. Steam impinging on the surface performs effective removal of accumulated dirt and the detached dirt is carried away on the web without a deleterious effect on the quality of the web. Steam injected against the roll (1) is vacuumed away from the roll surface via a suction chamber (18), whereby the cleaning steam is prevented from escaping to the surroundings. (Fig. 1)
Ahvenniemi Vesa
Lappalainen Teuvo
Gowling Lafleur Henderson Llp
Metso Paper Inc.
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